Coffee maker



Jan. 4 1927- D. RICHHEIMER JW p - Lon e reck- -When the receptacle iamade .Parental Jan. 4, 1927.

oFFi-CE.

ISLAC D. RICHHEIMER, OF NEW YORK, N. Y.

cormin Hanna. L

Application med aprii 9, 1926. Serial m. 1oo,7es.

This invention relates to coffee makers and more particularly to. animproved receptacle .for holding the ground coffee in the, urn or potduring the filtration operation; i i

The objects of the invention are to provide an improved coffeereceptacle which can be easily inserted in andI removed from the urn orpot, which is adapted to be easily prepared for -receivingthe groundcoffee and the water, and which comprises comparatively vfew parts-which are 'easily assembledand disassembled; to provide for. the freeflow of Water through the ground f coffee and the receptacle; to permitthe ground coffee to loosen up Land float in the receptacle and toprevent it from packing in the receptacle during the filtration'opcration; to provide improved means for securing'the filter mediumpinthe'bottom of the receptacle Without .damage to the medi- 'um and forholdingthis medium inv proper place duringv theV filtration operation;and to improve the construction and arrangement of parts so as tofacilitate the Lopera- -tions of. making coffee and of cleansing the urnor'pot. I

In the accompanying drawings I have illustrated the invention in aselected embodiment as applied to an urn, and Ereferring thereto: i

i Fig. 1 is an elevation of the urn, partly broken away and in sectionto better disv 1 close the invention.

Fig. 2 is a top plan 'view of the receptacle' removed from the urn.

I an urn which-fis provided with a crock 8,

a cover 9 and a water inlet vpipe 10. I"

have not 'shown all the structural details V 'Iof the urn because they'are generally famihar, they vary moi'e or less, and they are notnecessary to an understandin grounds hasa ltlange 1'2adapted to engagethe top offthe crock 8 to support'the recep- .tacle in the crock.r Thereceptacle may also g have 'a peripheral shoulder 13 'to engage the topof a crock for supporting the receptacle of the invention.) Thereceptacle 11 for t e coffee for a coffee pot it may be'supported-by aflange within the pot or by a shoulder.

on the potl just as in the case of the urn.y

The bottom 14 of the' receptacle isperlforated, preferably in a regulararrangement of perforations Which, however, do not extend to the edg'eof the bottom but terminate at a distance therefrom le'a'vin a flatimperforate rim 15 about the per oratedI central part of the bottom. Abinder plate 16 having a handle 1 7 is arranged Within the receptacleupon the bottom thereof; I

This binder plate .is perforated like the bottom 14', and theperforations in the binder i plate are made so that they can be regis--tered with the perforations -in the bottom.

The binder plate also has a flat 'imperforate rim 18L oiutside theperforated portion thereof to register with the rim-15 on the bottom. Anupturned flange 19 is provided at the margin of the binder plate andthis flange has an indentation 20 (Fig. 5) and shoulders 21 and 22.Between the-shoulders the flange is cut down at 23 toreduce its height.Projections 24' are provided on the inside ofl the receptacle adjacentthe .bot-

tom thereof to'vengage indentations 20 on the binder plate. I mayprovide one or a plurality ofthese' projections 24 and one or aplurality of indentations 20 to receive" drawings that three of theseprojections and aav ' said projectionsl I have indicated in the threeindentations are used and this is a satisfactory construction. Thebinder plate is adapted 'to be inserted snugly ina receptacle, at thebottom thereof, the indentations 20 permitting the binder plate .to passthe projections. The, projectiqns are located sufliciently above thebottom so that when the binder late is arranged in place in the receptace it may bee'turned slightly tol the right until the projection 24engages the shoulder. 22-, Which will limit the turning movement. Inthis movement the cutaway' portion of the flange 19 travels under theProjection and 'it is cut down toa proper' height'for thisfpurpose.yThis construction I enables me to make the binder plate so that theupturned flange 19 will fit snug against the side wall of the receptacleal the passage of ground coffee. s

filter paper or filter cloth or other filter medium 25 is clamped' bythebinder plate upon the bottom of the receptacle. Tha

jacent to the bottgm'fthereof and prevent,

: '55 -of the water through the receptacle is refilter medium ispreferably made-of a size to overlap the flat rim of 'the bottom of thereceptacle and lunderlap the flat rim 18 of the binder plate. These rmsare preferably made imperforate so that they Will firmly clampthe filtermedium and so um. It is not desirable to crown this binder plate muchbecause I Wish to have the filtermedium f irmly held between the bottomof the receptacle and the binder plate during the filtraton operationand at this timeit would be quite satisfactory if the Weirrht of theground coffee and the Water in t e recept-acleflattens the binder plateout to tem- 'porarily eliminate the crown.

A spreader plate 26 having a handle 27 is arranged in the receptacle asnear the top thereof as practicable. This spreader lis per- Hforated andits marginal edge is provided With one or more recesses 28 to receivethe projections 29 on the side Wall of the receptacle. The spreaderrests upon a corrugation 30 *in the side Wall of the Ireceptacle and itengages the projections29 so that by,

grasping the handle 27 the receptacle can be carried in the hand andinserted in the urn or removed therefrom. ITo strengthen the 'marginaledge of the sp'reader I provide it with ankangle flange' 31 and thespreader is preferably of sufiicient sizev tor fit snugly in thereceptacle.

lIn practice the receptacle may be suspended within the top of the crockand below the Water pipe 10, as shown in Fig. 1. Before or after arraning the receptacle in the urn the filter metI' upon the bottom of thereceptacle, the binder plate is arranged in place upon the filter'medium and turned to looked position; the.

ground coffee is placed in'the receptacle up'- on the binder plate. andfilter medium and Ishould be spread evenly throughout the receptacle.Then the spreaderis properly arranged Within the receptacle andif thereceptacle has been prepared away from the urn, it is then placed in theurn and the boilin water is admitted. The water is distrl uted b thespreader over'the mass of ground co ee in the receptacle. and passagetardedk b the filter medium so that the vwater* Wi l back up in thereceptacle and loosen up the mass ofground coffee and cause it to floatmore or .less freelywithin the -receptac1e. It is-for this reason Idesire to .take advantage of the full capacity ofthe receptacle .becauseit is desirable thatthe 'ground coifee should be freely suspended in thewater in the reoeptacle. This promotes mm is spread evenly' thefiltration operation and also produces a cofl'ee and the quantity of-Water; but it is my.

desire that under all conditions there should be a free percolation ofthe Water and to a reasonable extent at least a suspension of the groundcoflee in the Water, for this Will promote the efiicienc of thefiltration operationvand produce a esirable infusion.

The construction of the receptacle is such that it'can be easily handledand prepared for an infusion; it comprises but few parts, and theseparts can be assembled easily and. quickly for use and disassembledeasily and quickly for cleansing purposes; and the construction is also'Isuch that the parts may be easily cleaned and kept at all times in asanitary condition. I prefe'r to make the perforations in the binderplate so that they Will register With the perforations in the bottom ofthe receptacle When the binder plate is in locked position with theshoulder 22 in engagement with the' projection 24 .thereby providingcontinuous passage for the liquid coffee through the perforations andintercepted only by the filter medium. This pro- .vides for acomparatively free yflow'of the liquid coflt'ee and a rapid filtrationoperation.

I have described the invention'asused for making coffee, but it may beused in various forms for making tea and I Would have it understood thatI do not restrict myself to the use of the invention for making coffee,but. intend by the general term cofi'ee ma'ker to include the use of theinvention for making tea vor for producing an infusion from o'therAmaterials. i c i Changes 'in the construction and arrangement andproportion of arts of my invention may be desirable to a aptit for urnsand pots and other receptacles with Which the mvention may be used and Ireserve the right to make all such changes as fairly fall Within thescope of the following claims.

I claim: i

1. A coffee maker comprising a receptacle having a perforated bottom, afilter medium on said bottom, a perforated binder plate arranged withinthe receptacle upon the filter medium, and means for positioning andlocking the binder plate with its perforations' in registration with theperforations in sai bottom.

" 2. A coffee maker comprising a receptacle v' 4 havin a perforatedbottom, a filter medium on sai bottom, a perforatedbinder plate arrangedWithinthe receptacle upon the filter medium, interlocking means on thebinder plate and bottom, said binder plate being rotat'able within saidreceptaxlc, and means for limiting the rotative movement of the isobinder plate to register the perforations therein with the perforationsin said bottom. i

3. A cofl'ee maker comprising a receptacle,

a the bottom of said receptaole having a plurality of perforationssurrounded by an imperforate rim, a filter medium Spread on v saidbottom and having its margin over-lappincr said rim, a binder platearranged Within the receptacle upon the filter medium, interlockingmeans on the binder plate and bottom, said binder plate having animperforate rim correspondin with the rim on said bottom, and a' pluraity of perforations within said rim. 4

4. A coiee maker comprising a receptacle having a perforated bottom, aperforated binder plate arranged within the receptacle adjacent saidbottom, said bottom and said binder plate having flat imperforate rimsat their outerI edges, and a filter medium between the bottom andthe.binder plate and having its marginal portion engaged between saidflat i'mperforate rims, said bottom and binder plate havinginterlo'cking means. A coffee maker comprising a receptacle having aflat perforate bottom, a filter medium on said bottom, and a perforatedbinder plate arranged within the recept-acle upon the filter medium,said binder plate being crowned slightly Within its marginal portion.

6. A cofl'ee maker comprising a receptacle having a perforated bottom, afilter medium on said bottom, a perforated binder plate arranged Withinthe receptacle upon the filter medium, said receptacle having inwardprojections and said binder plate having an upstanding marginal -flangerecessed to receive said projections and cut down to mit rotativemovement of said binder and av shoulder at the end of the cut own iii:

:toV

portion of the flange to engage the proj ection and limit said rotativemovement.

7. A coee maker comprising a receptacle havin' a corrugation in-1ts sidewall adjacent t e top thereof, projections in the side wall' ofthe-receptacle above'said corrugaling bent to form a right angle flangeand said fla-nge being recessed to clear said projections.

ISAAC D. RICHHEIMER.

